Substance similar to caoutchouc and process of making same.



To all whom z'tmay I phy, chemi 110mm!) ncnmmficx AND KURT i'anxsnnnone, or ELBERFELD, GERMA Y, sameness,

'I'O FABBENFABBIKEN VOBM. FBIEDR. BAYER & (30., F ELBERFELD, A v

. CORPORATION OF GERMANY.

sun's'rmcn sinner. T0 cnou'rcnond AND rnocnss or mxmosmnd- I 1,076,196 lIoDrdwing.

Be it known that we, Kommn- DELBm'ipK and KURT M a, doctors of philosoof the German Emp re, at Elberfeld, Germany, have invented new undiuseful Improvements in Substances Similar to Caoutchonc and Proo esses of Making-Sh ne, of which the follows in is a' specification.-

:. nthe Journal 'vol. 64, 109/110 Kondakow described-e1 polymerization product obtained by we polymerization of betaegamma-ilimethyh er'yt-hrene. This product 1s totally different froln the'caoutchoue substance obtained by heat-mg is a- :whit'e crumbly mass which so quickly 1 changes in the air that it can be rolled into sheets only if it is subjected to this proc ess immediately after its production. The

' sheets thus obtained however can likewise only be kept for a, very short time and quickly in the air so that they are useless ,for teclmical urposes.- It has now been found that this substance can be con verted into-astable and technically ery vnluable product which can be used as a,

substitute for caoutehouc .'or by it with tannin. In.- "der to illustrate the new process gutta-percha,

I more'full thefollowing example isjgiven,

' the parts white: geroduet. of po mg by wei htz-JOO parts of the erization obtained from ta, gamma dimethylerythrene ac cording to the m described by Kondakow aremixed with -6 eaoutohoue like stable product is obtained:

v 1 Specification of Letters Patent. 4 Application filed Deeember 30, 1912. Serihl'lio. 739,408. 1

beta-gamma-dimethylerythrene. 'lt

"methylerythrene "caoutchoue and 'ta-nninv 5;- As a; new roduot'e steble eaoutehouclike substance t eeaoutehouc like autopoly-" f beta-'gamma-dimeth-.

parts of tannin. A

We; claim 2-- y g p t 1. The process of -producing a stable caout chouc-like' substance from an unstable caoutcomprises treat ng the same with tannin,

ohouc-like subst-anee whihfcomprises treatof betagamma dlmethylerythrene with g' ,ing an unstable autopolymerization product tannin.

of 1 beta, gamma 'd1me'thyl rythrene' with about 6% of its 'weightof -tannini- 4. ;As a new products-stable caoutchouci like substrinee comprlsing' beta-gammwdimerization product ylerythrene and 6. As anew roduetfefstsble ceoutchoug; like substance t e fcaoutchoue-like autopoly- 1 3.5: The. process of produoin ghsteble ceout ohoue-like substance which-comprises treat ing an unstable auto polymerization product 5 merization produetyof beta'- gemma-dimeth-. ylerythrene 1 1 b e 6%of its wel htlot V In testimony whereof we. have hereunto set our scribing witnesses hands in 'thej-preseneeof two -sub-y TKONRA'D DELBRfieK. 1,. 8.1"

4 KURT imIs U e, L s] Witnesses: v I p Norm,

chouc-like autopolymerlzatl'onproductwhich 

